Glass bottle molding means



June 25, 1935. F. DARLING 2,006,041

GLASS BOTTLE MOLDING MEANS Filed March 16, 1931 gwuentoa MWA PatentedJune 25, 1935 vz metoii PATENT OFFICE GLASS BOTTLE MOLDING MEANS FrankL.Darling, Baltimore, Md., assignor to Anchor Cap & Closure Corporation,Long Island City, N. Y., a corporation of New York Application March 16,1931, Serial No. 523,124

8 Claims.

The present invention relates to improvements in glass molding means andparticularly to means for forming the finish about the mouth of a glassbottle. 7 c

The particular embodiment of the invention illustrated in theaccompanying drawing and which will be hereinafter described more indetail, is especially intended for providing. means for formingdepressions in the exterior surface of the finish of a bottle, whichdepressions are to serve as a fulcrum or anchor means for a devicebywhich the cap commonly employed for closing the bottle may bedetached.

A further important feature of the present invention is that it includesmeans for reinforcing or strengthening the wall of a bottle neck inwhich the aforesaid depressions are formed.

The invention will be described in connection with the accompanyingdrawing in which,

Figure 1 is a view partly in vertical section of an embodiment of theinvention; I

Figure 2 is a plan andfpartial horizontal sectional view substantiallyon the line 2-2 of Figure 1;

neck ring of a glass bottle molding means and 2 7 mounted to swing abouta vertical axis which also Figure 3 is an elevation of a portion of abottle neck that has been formed by the means shown in Figures 1 and 2;

Figure 4 is a plan of Figure 3; and

Figure 5 is a section substantially on the line 5-5 of Figure 4.

Referring to the drawing, in the several views of which like parts aredesignated bythe same reference character, I designates the body of adesignates a portion of the holder or support in which such ring ismounted.

As customary, and as shown in Figure 2, the neck ring holder comprisestwo similar sections constitutes the axis for the sections of theparison mold l4.

One of the features of the present invention is that each section of theneck ring includes a separable liner portion 3, the innercircumferential wall of which is provided with means for imparting thedesired shape or finish to the mouth more or less tangentially, into thebore of the neck ring.

When the neck ring is closed, the ribs 6 and pins 1 thereof arepositioned to form in the finish of a bottle, being shaped by such neckring, re- 5 cesses 8 and vertically extending grooves 9 which areadapted to receive the ends and limbs of a cap removing device, such forexample as shown in my prior Patent N 0. 1,777,077, issued September 30,1930. V 10 The ribs 4, 6, and pins 1 are integral with the member 3 ofeach neck ring section and such separable member is preferably formed bya hydraulic forging method which enables such members 3 to be accuratelyformed of the desired (ii-' mensions and insures that exact duplicatesor counterparts of any desired shape and size can be provided. Byforging the neck ring, particularly a neck ring of the type hereindisclosed having projecting pins, it is possible to produce the rings inlarge numbers to absolutely uniform dimensions. The cost of productionis lowered and the forging process affords havinga highly compactedstructure. This produces heat trans.- mission of the character desiredand guards against irregular expansion and contraction. I prefer toemploy for the forging process a metal which is readily responsive tothe forging operation, such as brass or aluminum bronze.

One of the objections to the character of neck rings heretoforecommonlyemployed, in which parts corresponding to the pins 1 areinitially formed separate from the body of the ring, is the greatexpense incident to providing such parts so that they will be securelyattached to the ring and will not produce checks in the finished glassproduct.

In the use of neck rings there is a maximum amount of Wear along theparting line of the sections of the ring next to the finish on the 40article being molded. The wear at this pointacts to create a seam on thefinish of a bottle shaped thereby which interferes with securing thedesired sealing of the bottle when a closure cap is applied thereto.

When the finish forming parts of the neck ring are integral with thebody of thering, as has been the common practice, a very slight flaw orabrasion in the, surface adjacent the parting line sary, with a minimumloss of time and at very small expense.

Another objection to making the so-called inlay pins 1' initiallyseparate from the body of the neck ring is that the amount of heatradiated from such pins when in use differs from that of other parts ofthe ring and there is danger of the relatively small pins being burntofi.

By making the pins integral with the forming portion of the ring, Itherefore provide a more durable structure and also avoid the formationof flaws in the product, arising from having parting lines about thejunction of the pins and ring.

Iii designates the plunger or neck pin adapted to cooperate with theneck ring in forming the finish on a bottle neck, and by my invention,the portion of such plunger or pin that extends within the detachablesections 3 of the neck ring is shown as being of tapered form andprovided with two longitudinally extending grooves El, which arepositioned opposite the pins 7 on the neck ring.

The grooves or depressions ll gradually increase in depth toward thefree end of the plunger or neck pin with the result, that when the partsare positioned as shown in the drawing, and a body of glass isintroduced into the parison mold, the ribs l and 6, and pins '5 willprovide the annular groove 5 and recesses 8 and S in the bottle neckwhile the thickness or such neck in alignment with the grooves 9 will begradually increased in thickness toward the mouth. In other words, thegrooves or depressions l l in the plunger or neck pin will act to formlongitudinally extending rib-like portions l2, within the mouth of thebottle in substantial alignment with the exterior grooves S and recesses3, thus effectually strengthening the wall of the bottle at points whereit would otherwise be materially reduced by the presence of such groovesand recesses.

The shape of the recessed portion of the plunger or neck pin ill and therelation of the recess forming pins '1 of the neck ring thereto, aresuch that the neck ring may be readily opened and the plunger withdrawnwhen desired.

It is believed that the operation and advan tages of the invention willbe readily understood from the foregoing description of the drawing.

It will be noted that by the means described, it is possible to producea glass vessel having formed in the finish about its mouth recesses to.receive a closure removing means, the wall of the vessel in alignmentwith such recesses being reinforced or strengthened, so that danger ofbreakage at such portions is eliminated, and byv making the parts of theneck ring which give the desired contour or shape to the finish integralwith the body, it is possible to avoid objections that have beenincident to! prior mechanisms in which such portions are initially madeseparate and subsequently attached to the ring.

By the means described, glass vessels having the characteristicsreferred to, may be manufactured more readily and at a less expense thanby the means heretofore employed.

I claim:

1. The combination with a neck ring for providing a finish for the necksof glass bottles having two opposed and circumferentially spaced,projections extending into the bore of the ring to form exteriordepressions in the finish about the mouth of a bottle, of a neck pinadapted to be positioned in the bore of the neck ring and havinglongitudinally extending recesses of tapering depth formed in its outersm'faoe in substantial alignment with each of said projections on thering, for the purpose described.

2. A neck ring for providing a finish for the mouth of a glass vesselhaving within its bore a circumferentially extending bead and providedat one side of said bead with a rib extending substantially parallel tothe length of said bore and at the opposite side of the head, insubstantial longitudinal alignment with said rib, with a pin thatprojectsinto the bore, said bead and rib and pin being integral.

3. A neck ring for forming the finish about the upper end of a glasscontainer, said neck ring having a plurality of relatively short pinlikeprojections integral with and extending inwardly from said ring to formexterior depressions in the finish at the upper end of the glasscontainer shaped by said neck ring, said pin-like projections having alength slightly less than the thickness of the glass to be molded andsaid projections being spaced circumferentially of said ring and inclose proximity to the upper end thereof to form the exteriordepressions in the glass directly below the top of the finish.

4. A neck ring for forming the finish about the upper end of a glasscontainer, said neck ring having an inwardly extending flange adapted toform the top of the finish and also having a plurality of relativelyshort pin-like projections extending inwardly from said ring to formexterior recesses in the finish at the upper end of a glass containershaped by said neck ring, said pin-like projections having a lengthslightly less than the thickness of the glass to be molded, saidprojections being spaced circumferentially of said ring and in closeproximity to said inwardly extending flange to form the exteriorrecesses in the finish directly below and in close proximity to the rimof the container, and said pin-like projections being integral with theneck ring to dissipate heat and prevent defects in the rim of thecontainer above said recesses. I

5. A hydraulically forged neck ring formed from two similar sectionshaving an annular rib thereon and also having a pair of spaced ribsextending upwardly therefrom and substantially perpendicular thereto, aplurality of pin-like projections at the ends of said upwardly extendingribs in close proximity to the top end of the neck ring extendinginwardly from said ring whereby they will form exterior recesses in thefinish slightly below the rim of the container shaped by said rings, andalso form a relatively thin wall of glass intermediate said recesses andthe rim of thecontainer, said projections being integral with said ringto prevent checks in said thin wall of lass.

6. A neck ring for forming the finish about the upper end of a glasscontainer, said neck ring having an annular inwardly extending flangefor forming the rim of the container and a plurality of projectionsextending inwardly from said ring to form recesses in the exterior ofthe finish at the upper. end of a glass container and to cooperate withsaid inwardly extending flange to form a narrow wall of glass betweensaid recesses and the rim of the container, said projections beingintegral with the neck ring to prevent checks in said narrow wall ofglass.

7. In a device of the class described, the combination of a neck ringfor forming the finish about the upper end of a glass container, saidneck ring having .a plurality of relatively short pin-like projectionsintegral with and extending inwardly from said ring to form recesses inthe exterior of the finish at the upper end of the glass containershaped by said neck ring, said pin-like projections having a lengthslightly less than the thickness of the glass to be molded and saidprojections being spaced circumferentially of said ring and in closeproximity to the upper end thereof to form the exterior recesses in theglass directly below the top of the finish, and a neck pin adapted to bepositioned in the bore of the neck ring and having longitudinallyextending recesses formed in its outer surface in substantial alignmentwith each of said projections on the ring for the purpose described.

8. In a device of the class described, the combination of a neck ringfor forming the finish about the upper end of a glass container, saidneck ring having an inwardly extendingflange adapted to form the top ofthe finish and also having a plurality of relatively short pin-likeprojections integral with and extending inwardly from said ring to formexterior depressions in the finish at the upper end of a glass containershaped by said neck ring, said pin-like projections having a lengthslightly less than thethickness of the glass to be molded and saidprojections being spaced circumferentially of said ring and in closeproximity to said inwardly extending flange to form the exteriordepressions in the glass directly below the top of the finish and toform a narrow wall of glass between each depression and the rim of thecontainer, and a neck pin adapted to be positioned in the bore of theneck ring and having recesses formed therein in substantial alignmentwith each of said projections on the ring for increasing the thicknessof the wall of the vessel in alignment with said depressions.

FRANK L. DARLING.

